Datex-Ohmeda Aespire View, User'S Reference Manual

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10 Specifications and Theory of Operation
M1132382
10-17
PCV
1. Paw
2. Pmax
3. Pinsp
4. PEEP
5. Time
Figure 10-4 • Pressure control diagram
Pressure control supplies a constant set pressure during inspiration.
The ventilator calculates the inspiratory time from the respiratory rate
and I:E ratio settings. A high initial flow pressurizes the circuit to the
set inspiratory pressure. The flow then decreases to maintain the set
pressure (Pinsp).
Pressure sensors in the ventilator measure patient airway pressure.
The ventilator automatically adjusts the flow to maintain the set
inspiratory pressure.
Pressure control settings include:
•
Pinsp - sets the target airway pressure.
• RR - sets the rate of mechanically driven breaths.
• I:E - sets the amount of inspiration to expiration ratio.
• Pmax - sets the maximum airway pressure.
• PEEP - sets the positive end expiratory pressure.
• Rise Rate - sets the amount of time to attain Pinsp.
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